Car-truck side frame.



W. D. PORSYTH. CAR TRUCK SIDE FRAME. APPLICATION FILED JUNI: 1, 1914.

Ptented Jem.r 19, 1915.

zsHEBTs-SHBBT 1.

W. D. PORSYTH. CAR TRUCK SIDE FRAME. APPLICATION FILED JUNE 1. 1914.

Patented 13111111915.

2 SHEETS-SHEET 2.

UNITED sTATEs IDATENT oEEIoE. l

WILLIAM D. FoEsYTH, or YOuNGsToWN, OHIO, .assIGNOE To RAILWAY rnopUcTsCORPORATION, or BUFFALO, NEW Yoan, A coErpmTIoN or NEW YORK.

CAR-TRUCK SIDE FRAME.

Specification of Letters Patent.

Patented Jan. 19;, 1915.

Application illed June 1, 1914. Serial 110,842,155.

To all who-m it may concern:

Be it known that I, WILLIAM D. FoRsY'rII, a citizen of the UnitedStates, and a resident of the city of Youngstown, county of Mahoning,and State of Ohio, have invented a new and useful Improvement 1n C ar-Truck Side Frames, of which the followlng is a. specification. 0

The principal object of my inventionl 1s to produce a car truck sideframe whlch will be light and yet strong and which can be cheaply andeasily made. n

In the accompanying drawings, which form part of this specification andin which like reference characters refer to like parts throughout theseveral views, Figure 1 is a side elevation of a car truck side frameembodying my invention; Fig. 2 1s a top plan view of the side frameshown in Fig. 1; Fig. 3 is an end elevation of the side frame shown inFig. 1; Fig. 41s a section on the line 4 4 of Fig. 1; Fig. 5 is a sideelevation' of a. modified form 'of construction ooi a side frameembodying my invention; Fig. 6 is a section onv the line 6-6 of Fig. 5,;Fig. 7 is a plan view of the blank from which the compression member ofthe slde frame shown in Fig. 1 is made; Fig.' 8 1s a side elevation ofthe inishedcompression member; Fig. 9 is a plan view of the blank fromwhich the tension member of the side frame shown invFig. 1 is made; Fig.10 1s a plan view of the finished tension member; and Fig. 11 is a sideelevation of the finished tension member.

The car truckside frame shown in the accompanying drawings comprises acompression member 1, a tension member 2, and a bolster guide frame 3.The compression member 1 is made from a metal plate, the longitudinaledge portions of which are trimmed or sheared away to form a blank 4.The blank 4 has a general rectangular outline and is wider near its endsthan at its middle or ends, as shown in Fig. 7. The longitudinal edgeportionsl of the blank 4 are bent at right angles to said plate alonglines 5 parallel to the edges, to form flanges 6 projecting in the samedirection lfrom the blank 4. In. the same operation in which the flanges6 are formed by bending the longitudinal edge portions of the blank 4,or in a subsequent operation, the blank l4 isfbent along two parallellines (indicated by the dotted lines 7) which extend longitudinally ofthe blank .4 equally distant from the longitudinal median line thereofinto a channel-Shape in which theflanges 6 project in oppositedirections. In the same operation that the blank 4 is bent-into thechannel shape, or in a subsequent operation, said blank isv bent, alongtransverse lines. After the blank 4 has been bent along transverselines, it has two straight end portions 8, a middle straight portion 9,which lies in a plane parallel to the end portions 8 but spaced labovesaid end portions, and two inclined portions 10 connecting said endportions 8 and said middle portion 9. After the blank 4 has been treatedas described it is in proper form to constitute the compression member 1of the .side frame.

The tension member 2 is made from a metal plate, whose longitudinaledges are c ut or sheared off to form a blank 11. The blank 11 comprises`two end portions 12 which are connected by strips 13 with a middleportion 14, as shown in Fig. 9. The longitudinal edge portions of theend portions 12 of the tension member 2 are bent up at right angles tosaid end portions along parallel lines (indicated at 15) which .eX-

.tend longitudinally of said end portions 12 A said middle portion 14equally distant from the longitudinal median line thereof, to formilanges 18 pro]ecting from the blank "11 in a direction opposite tothe-direction in which the lianges 16 project. The blanky 11 is bentalong transverse lines to place the lmiddle portion 14 in a planeparallel with and spaced from the plane of the end portions 1 2., Afterthe blank 11 has been treated as described it constitutes the tensionmember 2 of the side frame.

The end portions '8 of the compression member 1 are placed between theanges 16 of the tension member 2 and in contact with the upper faces ofthe end portions 12 of said tension member 2, and the upper edges oftheflanges 16 contact with the under faces of the flanges 6 of saidcompression plate, but it may be cast or otherwise suitv ably formed. Inthe preferred form of construction, shown in Figs. 1 to 4, the bolsterguide frame 3 is made from a flanged member which comprises a web 20 andtwo spaced parallel flanges 21. The flanges 21 straddle the compressionmember 1 and the tension member 2 and are fastened thereto by rivets 22.The top parts of the flanges 21 of the bolster guide frame B'engage theunder faces of' the flanges 6 of the compression member 1 In themodified form of construction illustrated in Figs. 5 and 6, the bolsterguide frame 23 is composed of cast iron or steel, and, insteadof beingfastened to the compression and tension members, it is cast around themiddle portions of these members. When this form" of bolster guide frameis used, the compression member la is the same in construction as thecompres sion member 1 above described except that the flanges 6 areomitted.

Since the compression member l is made from ametal plate, the shape ofthe blank 4 and the lines of bending can be altered so as to give anydesired shape to said com pression member or to obtain anv desiredamount of metal at any point in saidcompression member. The same is trueof the ytension member 2. The flanges 6 stiffen the compression member1.l Y.

Considerable change may be made in the construction which is hereinshown and described Without departing from my invention, and I do notwish to be limited to the details of such construction.

lVhat I claim is:

l. A car truck side frame comprising a channel-shaped compression memberand a tension member fastened together at their ends, said compressionmember having flanges along the edges of the sides thereof, said tensionmember having flanges, on each end portion engaging opposite sides ofthe corresponding end portion of said compression member, said tensionmember having downwardly extending spaced flanges at the middle thereof,and a bolster guide frame fastened to the middle portion ofsaidcompression member and to said downwardlyr extending flanges `on saidtension member.

2. A car truck y'side frame comprising a channel-shaped compressionmember and a tension member having their'middle portions spaced apart,the end portions of said tension member bearing against the end portionsof the web of said compression member, the sides of said compressionmember projecting upwardly from the web thereof and having flanges alongthe upper edges thereof.

3. A 'car truck side frame comprising a tension member having spacedflanges at each end projecting therefrom in the same direction andspaced flanges at its middle portion projecting therefrom in a directionopposite to the direction in which said first mentioned flanges project.

4. A car truck side frame comprising a channel-shaped'compression memberand a tension member having their middle portions spaced apart, thesides of said compression member projecting upwardly from the bottomthereof, and having flanges along the upper edges thereof, said tensionmember having marginal flanges along each endl portion thereof, whichflanges 'are fastened to the opposite sides of the corresponding endportion of said compression member, the upper edges of the flanges ofsaid-tension member being in contact with the under faces of the flangesof said compression member.

5. A car truck side frame comprising a' channel-shaped compressionmember and a tension member having their end portions fastened togetherand their middle portions spaced apart, said compression member being ofgreatest cross-sectional area in the region where said tension andcompressionmembers diverge, each side of said compress1on member havinga flange along the upper .edge thereof.

6. A car truck side frame comprising a channel-shaped compression memberand a tension member having their `middle portions spaced apart, ysaid'tension member having mar inal flanges along each end portion thereowhich flanges are fastened to the opposite sides of the .correspondingend portion of said compression member, each of said flanges extendinginwardly beyond the point where said compression member and said tensionmember diverge.

Signed at St. Louis, Missouri, this 28th day\of May, 1914.

. WVILLIAM D. FRSYTH. Witnesses:

NE1L D. PRESTON, MARTHA A. SHELTON.

